Universal Motor Multiple Choice Questions and Answers


16. Which of the following applications make use of a universal motor


   A.Portable tools

   B.Lathe machines

   C.Oil expeller

   D.Floor polishing machine


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A.Portable tools

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17. A universal motor is one which


   A.Is available universally

   B.Can be marketed internationally

   C.Can be operated either on dc or ac supply

   D.Runs at dangerously high speed on no-load


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C.Can be operated either on dc or ac supply

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18. An outstanding feature of a universal motor is its


   A.Best performance at 50 Hz supply

   B.Slow speed at all loads

   C.Excellent performance on dc. supply

   D.Highest output kW/kg ratio


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D.Highest output kW/kg ratio

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19. Speed of the universal motor is


   A.Dependent on frequency of supply

   B.Proportional to frequency of supply

   C.Independent of frequency of supply

   D.None of the above


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A.Dependent on frequency of supply

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20. Which motor is relatively free from mechanical and magnetic vibrations


   A.Shaded-pole motor

   B.Universal motor

   C.Reluctance motor

   D.Hysteresis motor


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D.Hysteresis motor

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